This is the Xtreme version of that power and comes from my personal BOS, the power this gives is Xtreme and if you can't handle it, it can drive you a little nuts, and there is no reversing it once it starts. Blood magick in and of itself is dangerous enough, add Xtreme actions to it, and it becomes a force to be reconed with.
This shield will protect against any form of magick, including my own. You will have to spill some of your blood into the shield to mesh it with your energy but it's simple enough to do and will give you peace of mind against all forms of ANY magick that comes your way, that is meant to harm or kill. It will also protect against unbounds infiltrating your thoughts. it will protect against people reading your thoughts and influencing you.
It is an extremely powerful way of infiltrating your enemy without getting caught.